The 245 numbers are actual dyno numbers on a stock engine, not advertised GM figures. Depending on small factors (air temp, fuel quality etc) these will vary, but those are the numbers +/- 5hp depending on the day of the week.

The 245 numbers are actual dyno numbers on a stock engine, not advertised GM figures. Depending on small factors (air temp, fuel quality etc) these will vary, but those are the numbers +/- 5hp depending on the day of the week.

Oops! Why did I point to a 5.3l...losing it I guess.

The spec for the 5.7l are at;5.7l Engine SpecObviously this is per GM advertising.

Compare these specs to the ones for the 5.7l engine in my 1979 Suburban 165 Hp at 3600 rpm and 270 lb-ft at 2000 rpm.